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75th World Foundry Congress, WFC 2024

作者： Hu, Kehui Wang, Haoyuan Lu, Zhigang State Key Laboratory of Tribology in Advanced Equipment Tsinghua University Beijing100084 China Department of Mechanical Engineering Tsinghua University Beijing100084 China Key Laboratory of Advanced Materials Processing Technology Ministry of Education Tsinghua University Beijing100084 China State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Tsinghua University Beijing100084 China

Stereolithography-based ceramic additive manufacturing represents a promising technology for creating complex ceramic components with high precision. The technology's ability to form intricate structures and its compatibility with various ceramics make it particularly advantageous for rapid prototyping and low-volume production. This work discusses the recent progress and applications of stereolithography-based ceramic parts in the investment casting industry, particularly in the production of ceramic cores, shells, integrated core-shells, and filters, highlighting its potential to significantly accelerate production and enhance complexity. © 2024 75th World Foundry Congress, WFC 2024. All rights reserved.

关键词： Investment casting

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Functionalization design of zinc anode for advanced aqueous zinc-ion batteries

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SusMat 2024年第2期4卷 89-124页

作者： Ziyi Feng Yang Feng Fangfang Fan Dezhao Deng Han Dong Shude Liu Ling Kang Seong Chan Jun Ling Wang Jing Zhu Lei Dai Zhangxing He School of Chemical Engineering North China University of Science and TechnologyTangshanChina State Key Laboratory of Advanced Chemical Power Sources College of ChemistryNankai UniversityTianjinChina Shanghai Frontiers Science Center of Advanced Textiles College of TextilesDonghua UniversityShanghaiChina Shanghai Key Laboratory of Multidimensional Information Processing East China Normal UniversityShanghaiChina School of Mechanical Engineering Yonsei UniversitySeoulSouth Korea

Rechargeable aqueous zinc-ion batteries(AZIBs)offer high energy density,low cost,and are environmentally friendly,rendering them potential energy storage ***,dendrite growth on the zinc anode and numerous side reac-tions during operation challenge their *** advancements have introduced various materials for the functionalization of zinc *** developments effectively mitigate the performance degradation of zinc anode,enhancing both its cycle stability and the overall performance of ***,the construction of functionalized zinc anodes is discussed,current materials(including organic,inorganic and their composites)for modified zinc anodes are categorized,and the protective mechanism behind functionalized zinc anodes is *** study concludes by outlining the characteristics of materials suitable for dendritic-free zinc anode construction and the prospects for future development directions of functionalized zinc anodes in AZIBs.

关键词： anode functionalization inorganic materials organic materials zinc-ion batteries

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Study on the Uniformity Criterion of Homogenization for W-Mo Superalloys

Study on the Uniformity Criterion of Homogenization for W-Mo...

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Chinese materials Conference 2024, CMC 2024

作者： Guo, Xulong Zhou, Yang Qi, Huiling Jiang, Shichuan Xiao, Dongping Chengdu Advanced Metal Materials Industrial Technology Institute Co. Ltd. Chengdu610300 China State Key Laboratory of Metal Material for Marine Equipment and Application Anshan114009 China

In order to establish the homogenization criteria for superalloys containing W and Mo, this paper took GH5188 (containing W), GH4141 (containing Mo), and GH3128 (containing W and Mo) alloys as examples for research and analysis. Firstly, the microstructure and elemental segregation of the alloy after heat treatment with different homogenization regimes were observed using a desktop scanning electron microscope (SEM) and a field emission electron probe microanalyser. Secondly, the theoretical and actual segregation coefficients of the alloy elements after heat treatment with different homogenization regimes were calculated using the Jmatpro thermodynamic software and electron probe. The difference between theoretical and actual segregation coefficients was used to determine whether the elements were completely diffused, and the homogenization criteria for the alloy was obtained. Finally, the plasticity and physical properties of alloys after different homogenization treatments were measured using a Gleeble3800 thermomechanical simulator, a Qness Q30A+fully automatic high-precision microhardness tester, and an electronic high-temperature creep tester. The accuracy of the homogenization criterion was verified by comparing the numerical changes under different conditions. Results indicated that for alloys containing only W, W achieved complete diffusion when K′ ≤ 5%;for alloys containing only Mo, Mo achieved complete diffusion when K′ ≤ 10%;and for alloys containing both W and Mo, the elements achieved complete diffusion when K′ ≤ 10%. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Molybdenum alloys

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Minimal Sintering Shrinkage Aluminum-Based Ceramic Cores Fabricated by Stereolithography 75

Minimal Sintering Shrinkage Aluminum-Based Ceramic Cores Fab...

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75th World Foundry Congress, WFC 2024

作者： Wang, Haoyuan Hu, Kehui Lu, Zhigang State Key Laboratory of Tribology in Advanced Equipment Tsinghua University Beijing100084 China Department of Mechanical Engineering Tsinghua University Beijing100084 China Key Laboratory of Advanced Materials Processing Technology Ministry of Education Tsinghua University Beijing100084 China State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Tsinghua University Beijing100084 China

This study explores the stereolithography-based fabrication of aluminum-based ceramic cores, aimed at minimizing sintering shrinkage. Stereolithography-based ceramic cores often exhibit significant shrinkage during sintering, limiting their applications. In this work, by adding silica and kyanite into the alumina, high mechanical performance while minimizing shrinkage were achieved. Results demonstrate that cores with 22% silica and 8% kyanite show nearly zero shrinkage, making them suitable for complex, high-precision investment casting applications. © 2024 75th World Foundry Congress, WFC 2024. All rights reserved.

关键词： Kyanite

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Controlled Synthesis of Proton-Conductive Porous Organic Polymer Gels via Electrostatically Stabilized Colloidal Formation

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CCS Chemistry 2024年第7期6卷 1767-1775页

作者： Bin Chen Yifeng Kuang Lu Liu Linkun Cai Zaoming Wang Panchao Yin Liangbin Huang Cheng Gu State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou 510640 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065 Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641 South China Advanced Institute for Soft Matter Science and Technology South China University of TechnologyGuangzhou 510640 Institute for Integrated Cell-Material Sciences Institute for Advanced StudyKyoto UniversityKyoto 606-8501

Porous organic polymers(POPs)have attracted extensive interest due to their structural diversity and predesigned ***,the majority of POPs are synthesized as insoluble and unprocessable powders,which greatly impede their advanced applications because of limited mass transport and inadaptation for device ***,we report a controlled synthetic strategy of macroscopic POP gels by a cation-stabilized colloidal formation mechanism,which is widely adaptable to a large variety of tetra-/tri-amino build blocks for the synthesis of Tröger’s base-linked POP gels,aerogels,and ionic *** POP gels combined the integrated advantages of hierarchically porous structures and tailorable mechanical stiffness,whereas they could load substantial amounts of phosphoric acids and construct unimpeded transport pathways for proton conduction,exhibiting unprecedented proton conductivity at subzero *** strategy offers a new solution to the intractable processing issues of POPs toward device applications with cutting-edge performances.

关键词： porous organic polymers Tröger’s base linkage gels superprotonic conduction subzero temperatures

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Corrigendum to“Design and fabrication of high-performance self-setting trimagnesium phosphate”[***.28(2023)348-357]

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Bioactive materials 2024年第7期37卷 313-314页

作者： Jiawei Liu Wen Hou Wenying Wei Jian Peng Xiaopei Wu Chenxi Lian Yanan Zhao Rong Tu Takashi Goto Honglian Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of TechnologyWuhan430070China Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Chaozhou521000China New Industry Creation Hatchery Center Tohoku UniversitySendai980-8579Japan

The authors regret that the supplementary Fig.S12 is *** correction does not affect any of the results and conclusions in the ***.S11 and S12 are studies on hydration kinetics and hydration products of M/P=2 and M/P=4 *** the previous uploaded version,the caption and figures of the Fig.S12 are the same as *** have corrected the error and the correct figures are as *** authors are sorry for not checking the supplementary documents carefully before publication.

关键词： hydration correction kinetics

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Rectification Effect of 3D-Printed Filters with Deflectors 75

Rectification Effect of 3D-Printed Filters with Deflectors

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75th World Foundry Congress, WFC 2024

作者： Li, Chaoke Wang, Haoyuan Feng, Qian Hu, Kehui Lu, Zhigang State Key Laboratory of Tribology in Advanced Equipment Tsinghua University Beijing100084 China Department of Mechanical Engineering Tsinghua University Beijing100084 China Key Laboratory of Advanced Materials Processing Technology Ministry of Education Tsinghua University Beijing100084 China State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Tsinghua University Beijing100084 China

A novel 3D-printed filter with integrated deflectors is proposed to enhance the state of metal liquid outflow. The rectification effect of filters with varying structural sizes was investigated through physical simulations. It was found that filters with smaller structural sizes allow the outflowing liquid to interact more readily under disturbance, promoting fluid convergence, but at the cost of reduced flow rates. With 3D printing, deflectors were integrated into a larger structural-size filter to guide fluid convergence, significantly enhancing the rectification effect and flow stability without reducing the flow rate. The filters proposed in this work allow for the decoupling of rectification and filtration functions, providing greater design flexibility for improving filter strength, filtration efficiency, and other critical performance attributes. © 2024 75th World Foundry Congress, WFC 2024. All rights reserved.

关键词： Electric rectifiers

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具有气-液-固三相界面的二维/二维石墨相氮化碳@碘氧铋S型异质结高效光催化二氧化碳还原

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Science China materials 2024年第6期67卷 1830-1838页

作者：杨超张庆贺王往程蓓余家国曹少文 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Technology Innovation Center for Advanced Composites Wuhan University of TechnologyWuhan 430070China Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China

在过去几十年中,将二氧化碳光还原转化为有用的化学燃料(甲烷、一氧化碳和甲醇等)受到了极大的关注.然而,由于光生电荷的复合速度快,二氧化碳和水分子的共吸附不足,目前的二氧化碳光还原系统的效率还远远不能令人满意.本文报道了在疏水... 详细信息

在过去几十年中,将二氧化碳光还原转化为有用的化学燃料(甲烷、一氧化碳和甲醇等)受到了极大的关注.然而,由于光生电荷的复合速度快,二氧化碳和水分子的共吸附不足,目前的二氧化碳光还原系统的效率还远远不能令人满意.本文报道了在疏水碳纤维纸上构建一个紧密的二维/二维石墨相氮化碳@碘氧铋梯型(S型)异质结,用于高效的二氧化碳光还原.所制备的异质结具有良好的一氧化碳选择性(77.8%)和活性(458.0μmol h^(-1)m^(-2)).良好的光催化性能归因于良好设计的S型异质结结构,提高了电荷分离效率,以及形成了气-液-固三相界面,充分保证了二氧化碳和水的同时供给.这项工作为高效光催化二氧化碳还原系统的设计提供了新思路.

关键词： CO_(2)photoreduction S-scheme heterojunction tri-phase interface separation of charge carriers co-adsorption of CO_(2)and H2O

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Effect of Fe_(2)O_(3)nanoparticle on the interface microstructure and properties of Al/Cu plasma arc fusion-brazing joints

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China Welding 2023年第3期32卷 10-20页

作者：李岩杨楠樊丁黄健康张欢 Materials Science and Engineering College Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals Lanzhou 730050China

The lap joint of T2 copper plate and 1060 pure aluminum plate was made by using the plasma arc welding method with adding Fe_(2)O_(3)nanoparticles in different *** research analysis found that the thickness of the IMC(intermetallic compound)and eutect-ic region decreased after the addition of nanoparticles due to its inhibitory *** the proportion of Fe_(2)O_(3)nanoparticles is 3%,the in-terface intermetallic compound layer is the ***,after this ratio is continuously increased,the inhibition effect is weakened by the agglomeration of nanoparticles,and the thickness begins to increase *** mechanical and electrical properties of the joint are mainly affected by the thickness of the IMC *** nanoparticles are agglomerated into large particles with high ***,the tensile strength and relative electrical conductivity of the joint are first increasing and then decreasing with the increase of nanoparticle *** the proportion of nanoparticles is 3%,the tensile strength and electrical conductivity are maximum.

关键词： Aluminum-copper dissimilar metals Fe_(2)O_(3)nanoparticles intermetallic compound mechanical properties conductive properties

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Broadband high-performance microwave absorption of the single-layer Ti_(3)C_(2)T_(x)MXene

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Journal of materials Science & technology 2022年第20期115卷 148-155页

作者： Xuejiao Zhou Junwu Wen Zhenni Wang Xiaohua Ma Hongjing Wu School of Advanced Materials and Nanotechnology Xidian UniversityXi’an 710071China State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Xidian UniversityXi’an 710071China MOE Key Laboratory of Material Physics and Chemistry under Extraordinary School of Physical Science and TechnologyNorthwestern Polytechnical UniverstyXi’an 710072China

MXenes,a family of two-dimensional(2D)materials,exhibit peculiar microwave-absorbing behaviors due to their unique chemical composition and *** laminated Ti_(3)C_(2)T_(x) MXenes with a multilayer structure have been used for microwave absorption,real 2D MXenes with a single-layer structure have not yet been ***,the electromagnetic wave response behavior of single-layer Ti_(3)C_(2)T_(x) MXenes was explored in *** permittivity of Ti_(3)C_(2)T_(x) MXene rises dramatically with an increase in filler loading,and Ti_(3)C_(2)T_(x) MXene features a distinct dielectric response wherein dipolar polarization and interfacial polarization makes a greater contribution at low filler loading;conductive loss becomes more prominent at high filler *** laminated Ti_(3)C_(2)T_(x) MXene,single-layer Ti_(3)C_(2)T_(x) MXene delivers superior absorbing capability:The RLminvalue of SL-Ti_(3)C_(2)T_(x)-22%reaches-43.5 d B at 6.5 GHz,and a broad EAB of 6.88 GHz can be attained at a thickness of 1.8 mm due to enhanced dipolar polarization,interfacial polarization,and conductive *** work is of great significance in guiding the future development of MXene-based absorbers.

关键词： Microwave absorption Ti_(3)C_(2)T_(x)MXene Single-layer Conductive loss

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